Greek digital dividend

The study examined options for the re-planning of the proposed Greek DTT network to allow the release of UHF spectrum above channel 60. It specifically considered the impact on the plan for the migration from analogue to digital of releasing the spectrum and the ability to support the planned TV stations and associated regional and national[…]

Practicality of on-channel repeaters for DTT

The study  analysed the possibility of repairing holes caused by base station transmitters in digital TV coverage areas by deploying repeaters. The approach was based on co-locating a small TV ‘booster’ transmitter at any interfering base station.  The aim was to increase the available TV signal in the area to an extent sufficient to protect[…]

Digital TV Switchover process support

The Sekreteriat, charged with informing the Danish public about the Digital TV Switchover process (DSO), wished to understand the technical issues relating to off-air reception by the public. The study provided a report summarising general DTT issues, such as the impact of household aerial condition, the interpretation of coverage maps and man-made noise. In addition,[…]

Point to area propagation above 3 GHz

This study was undertaken to develop ITU-R P.452 for use in point-area modelling above 3 GHz has been described in other requirements for this Label. This work included a fairly extensive measurement campaign also involving the Rutherford Appleton Laboratory and Durham University. The purpose of the measurement campaign was twofold; to give a basis for model development and provide[…]

Wideband impulse response measurements

Undertook a campaign to measure the wideband impulse response of the outdoor-to-indoor channel for the UK Space Agency.  The work was undertaken in the context of global positioning system design. A sliding correlator channel sounder was designed and constructed, operating at a chip rate of 100 MHz and a carrier frequency of 2.4 GHz.  Measurements[…]